There is probably a joke in there about riding an ass into town.
I take it Jenrick is one of these "new" Christians they have these days in that there London. Where what you know doesn't matter, what you believe is irrelevant as long as you feel it (in the "right" way = literally)
I have yet to meet a Christian who is embarrassed they don't know the Bible chapter and verse. But I know a few atheists who are 😀